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Mathematics Questions and Answers January 25, 2021

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Another important research question in both labor and public economics is to investigate the impact of union on workers' wage. To study the effects of unionization on wages, you construct a panel of N individuals and T time periods. We assume that each individual's job does not change during the period. After holding focus group discussions with
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Symposium is part of a larger work referred to as Plato's Dialogues . Wishart and Leachfound that about 21.4% of five-syllable sequences in Symposium are of the type in which four are short and one is long. Suppose an antiquities store in Athens has a very old manuscript that the owner claims is part of Plato's Dialogues . A random sample

Problem 1E The true height of a mountain peak is unknown. Repeated measurements of the height are made using a laser altimeter. The measurements X1, X2,. . . ,Xn satisfy the following conditions: for 1 S i S n, X=pb+6 where a is the unknown constant height of the mountain peak, and 6,; is a random error. The errors are i.i.d. with mean 0 and
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cc.instructure.com/courses/19615/assignments/491666?module_item_id=1411634 it's Chapter 12: Linear Regression Concepts 18 Score: 2/20 3/20 answered Question 17 Statistics students in Oxnard College sampled 10 textbooks in the Condor bookstore and recorded the number of pages in each textbook and its cost. The bivariate data are shown below: Number
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George buys six lottery tickets for $2 each. In addition to the grand prize, there is a 20% chance that each lottery ticket gives a prize of $4. Assume that these tickets are not grand prize winners. a. What is the probability that the tickets are winners more than the average that George expected? b. What is the probability that none of the

Hello dear tutors, Could you please kindly help me to explain and solve the following math question regarding to Calculus 2 ? If possible, could you please show me your work step by step? I have attached the question in the following attached picture. Thank you very much! Question 3' A volume is described as follows: 1. the base is the region
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8. In certain experiments, the error made in determining the density of a substance is a random variable having a uniform density with a = -0.015 and B = 0.015. Find the probabilities that such an error will a. fall between -0.002 and 0.003 b. exceed 0.005 in absolute value 9. A basketball team has a 70% free-throwing percentage. a. Write a
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Cheddar, Please! Wellbeing cognizant Americans regularly counsel the nourishing data on food bundles trying to keep away from food sources with a lot of fat, sodium, or cholesterol. The accompanying data was taken from eight distinct brands of American cheddar cuts: Brand at (g) Sato. marry Fat lee at teed 0.21 Sodom Orgl Calories Kraft Exclusive

OBJECTIVES: 1.Correctly identify the probability distribution for each given problem. 2. Solve each problem using appropriate probability distribution function in Microsoft Excel. 3.Interpret the obtained result on each problem. TASKS Read and understand each item carefully. Identify the appropriate probability distribution and use Microsoft Excel

The solid S in the figure is the intersection of two cylinders of radius r whose axes are perpendicular. S (a) The horizontal cross section of each cylinder at distance y from the central axis is a rectangular strip. Find the strip's width. (Express numbers in exact form. Use symbolic notation and fractions where needed.) strip's width: (b) Find
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Could you assist me with this question pls? 5. Let X and Y equal the forces {in pounds) required to pull stud No. 3 and No. 4 out of a window that has been manufactured for an automobile. Assume that the distribution of X. and Y are \"(H.030 and was). respectively. (a) If it): = nr = ID observations are selected randomly, dene a test statistics
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A researcher is interested in estimating the mean weight of a semi tractor truck to determine the potential load capacity. She takes a random sample of 17 trucks and computes a sample mean of 20,000 pounds with a sample standard deviation of 1,500. The 95% confidence interval for the population mean weight of a semi-tractor truck is

10. Medical records at a doctor's office reveal that 12% of adult patients have seasonal allergies. Select a random sample of 100 adult patients and let Y = the number of individuals in the sample who have allergies. (a) Calculate the mean and standard deviation of the sampling distribution of Y. (b) Interpret the standard deviation from part (a)
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a random sample of 12-ounces milkshakes from 11 fast food restaurants had the following number of calories. _____________________________________________________ 476 580 504 473 375 700 510 591 472 399 450 _____________________________________________________ assume the population standard deviation is o=86 if appropriate, construct a90 %

D Question 6 Questions 6 and 7 are based on this table. Suppose X and Y are discrete random variables with the following joint probabilities: X Y=1 Y=2 1 0.2 0.1 2 0.1 0.3 0.2 0.1 Assuming that X and Y are independent, find the mean and variance of W = X + Y. D Question 7 Suppose X is a random variable following a binomial (n, p) distribution,
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John, the owner of an ice-cream parlor, collects datafor the daily sales of ice cream with respect to the daily temperature. If John were to create an scatterplot, all of the following will be characteristics of correlation EXCEPT ___________. Direction of association between the daily sales and temperature Amount of daily sales at any given

The Fast N' Hot food chain wants to test if their "Buy One, Get One Free" program increases customer traffic enough to support the cost of the program. For each of 15 Home stores, one day is selected at random to record customer traffic with the program in effect, and one day is selected at random to record customer traffic with program ..
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Mi Study Online at OCC Tuitic x Ocean Connect X M5. Assignment X Do Homework - M5. Assig X + C @ mathxl.com/Student/PlayerHomework.aspx?homeworkld=597906861&questionld=23&flushed=false&cld=6516898&back=DoAssignments.aspx Intro Statistics (2021S10-MATH-156-DL1) Edith Conde & | 06/19/21 12:07 PM Homework: M5. Assignment Sa Score: 0 of 1 pt 27 of 43
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question in image , please give legible or preferably typed response 1. A national survey showed that all people living in the United States exercise an average of 5.4 times per month. As a researcher studying health related behaviors, you want to know whether people living in New Jersey exercise more often, on average, than the total U.S.
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What is the correct answer here? Incorrect Question 8 0 / 1 pts Suppose we wish to create a 90% confidence interval for a statistic which is estimated to be 23.12 from our data. We decide to use a non-parametric bootstrap to create the interval. The following quantiles are obtained for the set of estimates of this quantity based on 10,000
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(c) A inction at, y) is dierentiable at (a, b) if and only if the linear approximation is a good approxi- mation of the function near the point (a, b). In other words, the surface 2 = f(l':, 3;) near (a, b, f[a, b)) looks like the tangent plane. In this part we will show that the existence of the partial derivatives is not enough to guarantee
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Please help with the attached question: Assume that individual lifetime 7 follows a Geometric distribution: P(T = x) = (1 - 1)34, for x = 1, 2,.... with 0 " = 1- 11=0 (b) Show that the mortality rate (x) = P(7 = x|7 2 x) does not depend on the age, i.c., A(x) = 1 for all x. (c) Write down the likelihood and log-likelihood function given the
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Answer.... In the following multiple regression model, TimeSpent=Bo+B1 athletes+32 nonathleteste where TimeSpent = time spent studying for the final exam athletes = a binary variable which equals to 1 for athletes, 0 for non-athletes nonathletes = a binary variable which equals to 1 for non-athletes, 0 for athletes If athletes spend more time
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Problem 1A (expectation and p.d.f. of a function of a random variable, Y = g(X)). Consider a random variable X N Uniform[e, 82] and dene the new random variable Y = lnX. (a) Compute E(Y), using the theorem that states that E(g(X)) = If; g(a:)fX(:r) also. (b) Now we will calculate E(Y) by computing the probability density function of Y rst. To do
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At a local company, 15% of the employees are women. Every day, 6% of the women bring their lunch to work, while only 4% of the men bring lunch. Find the probability that a randomly selected employee is a woman given that the person brings their lunch to work. O A. 0.791 O B. 0.060 O C. 0.009 O D. 0.209 O E. 0.150
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Specifically, based on the paragraph below, please guide me through 1 (a-g). Very lost with d and e. --> ***Of note, This is (T-critical Value that I'm looking for. Not the Z-Critical Value).**** & SHOW ALL WORK! THANK YOU! Source: My 'Principle of Statistics' Math professor created this assignment from Math 167 class. Question/Paragraph-->

I would like this solved correctly Question 6 Not yet answered Marked out of 1.00 F Flag question Find the value of x where the function: x4 f(x) = 'T 2x3 4x2 has a local minimum. Question 9 Not yet answered Marked out of 1.00 F Flag question Consider the function: 3x3 f(x) _ 4x2x Choose the correct statement: Of(x) has a horizontal asymptote at y
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Unit 6 Application Score: 0/18 0/3 answered Question 3
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Question 8 - You would like to determine if meeting with a registered hospital chaplain (yesfno) is related to having a do not resuscitate order (yesfno) among a group of terminally ill patients at your health center. What would be the best statistical test to utilize? Ttest ANOVA Spearman's Correlation Coefficient Chi-square
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Which of the following situations could produce data sets or plots that could have a regression line with a negativey -intercept? Select all that apply. Select all that apply: The net profit of a company as a function of the number of months since it was founded, where net income is gross income minus expenses. The number of employees of a company

i need help LAST ACTIVITY: The following data represent the IQs of 50 police applicants COMPUTE THE FF: who passed the 1st screening test. Construct a frequency distribution table Mean, Median and Mode with 7 classes. 120 118 110 112 120 116 107 120 115 109 117 110 112 114 113 108 112 118 100 125 121 120 111 111 120 110 114 117 127 126 115 117 122
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As a member of the marketing team at an Internet music site, you want to understand your customer preferences when visiting your website. You are interested to know their choice of search engine and how many hours they spend in a week browsing the website. A survey was conducted on 30 visitors to the site and the information collected is recorded
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Suppose that AA and BB are two independent events for which P(A)=0.34P(A)=0.34 and P(B)=0.55P(B)=0.55. Find each of the following: A. P(A|B)=P(A|B)= B. P(B|A)=P(B|A)= C. P(AandB)=P(AandB)= D. P(AorB)=P(AorB)=

The amount of time adults spend watching television is closely monitored by firms because this helps to determine advertising pricing for commercials. Complete parts (a) through (d). (d) One consequence of the popularity of the Internet is that it is thought to reduce television watching. Suppose that a random sample of 45 individuals who consider
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Q3 Part (a) and (b) library(astsa) then you can use both salt and saltemp - . . . . . . . . . .. . . . . . . . . . . . .. .. 10 . . . . . . 8 temperature 6 4 30 20 20 cols . . .. . . . . . 40 10 rows 60 Fig. 1.18. Two-dimensional time series of temperature measurements taken on a rectangular field (64 X 36 with 17-foot spacing). Data are from
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2. One card is selected at random from an ordinary deck. The table shows all 52 equally likely outcomes. Hearts A 2 3 4 5 6 7 8 9 10 J Q K Diamonds A 2 3 4 5 6 7 8 9 10 J Q K Spades A 2 3 4 5 6 7 8 9 10 J Q K Clubs A 2 3 4 5 6 7 8 9 10 J Q K Let be the event a face card is selected (Jack, Queen, or King). Let be the event a king is selected. Let

68349 3 5 83353 5 4 70444 4 3 75127 4 3 80580 6 5 24598 5 3 29958 5 4 54188 7 3 1904 6 4 60092 4 2 80275 7 5 47578 5 3 78404 3 4 59219 4 4 11124 7 2 58177 6 6 3022 4 6 12971 6 3 68569 4 4 85500 4 2 81937 4 2 82469 3 4 14903 6 3 17728 6 5 56310 5 4 99278 6 4 25231 4 4 17969 2 3 62216 4 3 98239 5 6 89144 3 3 70083 2 6 45811 4 4 The manager of Falcon
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how do you compute A state-by-state survey found that the proportions of adults who are smokers in state A and state B were 18.3% and 24.5%, respectively. (Suppose the number of respondents from each state was 3000.) At @= 0. 10, can you support the claim that the proportion of adults who are smokers is lower in state A than in state B? Assume the
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The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects that only 10% of his customers buy a magazine and he thinks that he might be able to use the display space to sell something more profitable. Before making a final decision, he decides that for one day he will keep track of the number of customers

A machine produces tempered glass for mobile phones. The tempered glass produced is either grade A (good), grade B (minor defects) or grade C (unacceptable). The glass produced is put through an inspection machine that is able to detect any grade C glass and discard it. We may assume that the machine makes no mistakes in the detection process,

Question Set 1. Millennials & Tattoos In this question set you will use StatKey to conduct two different randomization tests. These data are not built in to StatKey, so you will need to "Edit Data" to manually enter them. For each part of this question set, use the following research question: Do more than 30% of all American Millennials have a

3. Consider the following linear combinations of the (not necessarily independent or un- correlated) random variables,Y1,Y2,Y3andY4 W1=14(Y1+Y2+Y3+Y4) W2=12(Y1+Y2)21(Y3+Y4) (a)State the above linear combinations in matrix notation; please indicate the el- ements in the matrices before simply writing a final matrix-only formula. (3 points) (b)Find

a brief explanation or answer only is fine ill The population mean and standard deviation are given below. Find the required probability and determine whether the given sample mean would be considered unusual. Fora sample of n =6?, nd the probability of a sample mean being less than 22.1 if p.= 22 and o = 1.24. a Click the icon to View page 1 of
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Moving to another question will save this response. Question 3 The number of pizzas ordered on Friday evenings between 5:30 and 6:30 at a pizza delivery location for the last 10 week exponential smoothing with smoothing constants of 0.4. What is the MAPE using alpha = 0.4? 58, 46, 55, 39, 42, 63, 54, 55, 61, 52 O a. 51.95 b. 85.4 O c. 14.2 O d.
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A developer who specializes in summer cottage properties is considering purchasing a large tract of land adjoining a lake. The current owner of te tract has already subdivided the land into separate building lots and has prepared the lots by removing some of the trees. The developer wants to forecast the value of each lot. From previous

How do you calculate the RR? They found a total of 59 patients. Fill the attack rate, RR by characteristic (6 pts) Addressed in q 1 on Exercise 3 Prep Work Characteristic #cases(9%) NYC population attack rate.* RR by per million pop characteristic Agelyr D 191 2 (3) 2,324,081 09 20-29 1 (2) 1,553,981 30 39 3 (5) 1,549 111 19 40-49 1 (2) 1,177,190
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answer this \fGiven all the six data points below: 1.037 1.034 1.039 1.040 1.041 1.037 Find the mode. 1.034 O 1.037 1.039 1.040Which of the following groups of observations is trimodal? A B C 3.2 3.1 3.0 3.3 3.1 3.0 3.5 3.2 3.0 3.5 3.2 3.0 3.6 3.3 4.0 3.6 3.3 5.0 3.6 3.4 6.0 OA OB OC O none of the aboveMean may be used in ordinal data. True O
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Question 2 The following equation implicitly defines a function w(u, v) = c: Not yet answered 2u + 401-7203 =3 Marked out of 3.00 Find the partial derivative of w with respect to v and express it as: P Flag question a . vo av C . wd + g . vu + k. . The coefficient a is equal to . The coefficient b is equal to . The coefficient c is equal to . The
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825 In a study of the cognitive skills required for successful arguments, 62 psychology graduate students were equally divided into two groups. Group 1 was presented with arguments that always attempted to strengthen the favored position. Group 2 was presented with arguments that always attempted to weaken the nonfavored position. If you compare
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Help needed with detailed explanations (5 points) Conclusion A researcher compared two brands of gasoline to see if there was a significant difference in miles per gallon. Their null hypothesis was that the two brands performed equally well. They did an appropriate hypothesis test on the sample data and the resulting p-yalue was .004. State the
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what is the approximate distribution of the sum of a random sample of size 150 from a population whose mean and standard deviation are 22 and 10, respectively?

Question 1 A household goods company has recently set up an on-line order system, which has been in operation for 73 days. When a customer attempts to place an on-line order with a company marketing household goods, a computerized system automatically checks whether the customer has exceeded their credit limit.Past records indicate that the

D. Solve the following problems: /1. In an examination in Statistics, the mean grade is 72 and the standard deviation is 6. Find the probability that a particular student will have a score: a. higher than or equal to 75 b. from 65 to 80 c. lower than or equal to 60 2. The scores of 400 applicants who took the examination in a certain company
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answers please 1. According to a poll, 22% of high school students in the United Kingdom say that Dobby is their favorite character in the Harry Potter books. Let's assume this is the parameter value for the entire population of high school students in the U.K. You take a sample of 150 high school students and record the proportion, p, of
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7. On a certain day, the national average for the cost of a gallon of gasoline is $2.74. An official at a gasoline company selects an SRS of 25 gas stations and finds an average cost of $2.71 per gallon. Which of the following statements is true? O $2.74 and $2.71 are both statistics. $2.74 is a parameter and $2.71 is a statistic. $2.74 and $2.71
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Need Help with this one, Thank you! What is the variance of the probability 3 points What is the variance of the probability 3 points distribution? * distribution? * X 2 4 6 8 X 0 P(X) 1/5 1/5 1/5 1/5 1/5 P(X) 1/8 3/8 3 / 8 1/8 O a. 4.15 a. 0.75 O b. 6.35 O b. 1.00 O C. 8.00 O c. 1.25 O d. 7.50 O d. 0.50 What is the mean of the probability 3
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Question #1 A random sample of 50 wine drinkers were asked the following question: do you prefer red wine or white wine? The results of the survey can be found on the " Wine " worksheet in the data pack. a.Using a 5% significance level, conduct an appropriate nonparametric hypothesis test to determine whether wine drinkers prefer red wine to white
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please help me. In this problem, we consider the UN1 1 a dataset, which is a subset of the UN1 1 dataset from the alr4 package. The UN1 1 a dataset contains the following measurements for n = 150 randomly selected countries and territories, mostly taken between 2009 and 2011. The variables are: region region of the world group a categorical
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A large furniture store has begun a new ad campaign on local television. Before the campaign, the long term average daily sales were $24,819. A random sample of 40 days during the new ad campaign gave a sample mean daily sale average of = $25,910. Does this indicate that the population mean daily sales are now more than $24,819? Use a 1% level of

A firm has recorded data on each of their salespeople. Variables recorded include Sales , Age , and Years of Experience . The following output is for a model where sales is predicted using both Age and years of Experience . The plot shows a confidence ellipse for the coefficients of the Experience and Age terms in the model. Call: lm(formula =
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help please AutoSave OFF 9 06 ... w- Midterm #1 Spring, 2021 Biostatistics 100A - Compatibility Mode - Saved to my Mac References Mailings Review View ? Tell me Share Comments Home Insert Draw Design Layout Times New... v 12 A A Aav A AaBbCcDdEe AaBbCcD AaBbCcDdE AaBbCcDdEe AaBbCcD AaBbCcDdE Emphasis leading 1 Normal Subtitle Title No Spacing
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statistics 18 An electronics manufacturing process has a scheduled mean completion time of 65 minutes. It is claimed that, under new management, the mean completion time, j, is less than 65 minutes. To test this claim, a random sample of 14 completion times under new management was taken. The sample had a mean completion time of 62 minutes and a
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please help! 57 23 Another interval estimate of the mean repair cost, using a sample size of 30, yielded the following 95% confidence 58 interval 59 $1,662 $1,906 60 What was the sample standard deviation? 61 $298 62 $307 63 $317 64 $327 65 66 Questions 24-28 are related to the following 67 In a random sample of 650 IUPUI undergraduate students
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This is Chance strategy and choice problem 19.7 19.7 Roll a single die until you get a O. Let n denote the number of rolls until a O appears. Given a winner sequence, we obtain the game Rolling for a O. Determine the probability p = "Player 1 wins the game" for the following winning sequences: (a) WE (b) LWW (c) WLLWL (d) Find a winner sequence
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Question 5 0/4 pts O 2 0 Details Giving a test to a group of students, the grades and gender are summarized below A B C Total Male 9 3 6 18 Female 10 12 5 27 Total 19 15 11 45 If one student is chosen at random, Find the probability that the student got a C: Find the probability that the student was male AND got a "B": Find the probability that
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Could I get some help on this worksheet? 1) Married people seem to have better health than their single peers. If a marriage ends, the healthy edge tends to disappear, with divorced or separated people reporting higher rates of illness. This conclusion was based on a nationwide survey conducted by Statistics Canada of 9775 random people, aged 20
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At the end of each class, Prof. McTreeville picks a student and asks them a multiple-choice question with the options A, B, and C. She allows the student to ask whether their answer is right or wrong before they make their final decision. Prof. McTreeville may respond to this question in one of two ways: she can either say "your answer is wrong"

Sampling A researcher sets out to determine the share of time the urban population of the United States listens to dance music. He identified the following population groups: construction workers, gym-goers, bar and night club patrons, and library readers. What is the name for all those population subgroups? What should the researcher ensure

thank you for your time A researcher wants to study the relationship between salary and gender She randomly selects 215 individuals and determines their salary and gender. Can the researcher conclude that salary and gender are dependent? Income Male Female Total Below $25,000 22 20 42 $25,000-$50,m0 23 20 43 $50,000S751D0 31 34 65 Above $75,000 34
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The question is in the picture, Thank you. In Chapter 2 we have seen how a 00 plot or a probability plot could be used to assess visually whether the quakes dataset could be modelled using an Exponential(0) or not. (For this homework, you can also assume the quakes dataset is drawn from an Exponential(9) distribution.) Although useful we would
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The manufacturing process at a factory produces ball bearings that are sold to automotive manufacturers. The factory wants to estimate the average diameter of a ball bearing that is in demand to ensure that it is manufactured within the specifications. Suppose they plan to collect a sample of 50 ball bearings and measure their diameters to

A car dealership has 35 used vehicles on its lot, of which 28 are valued at $20,000 or less. It has 40 new vehicles on its lot, of which 1 is valued at $20,000 or less. A. What is the probability of random selecting a car from this lot and finding that it is a used car or a car valued at $20,000 or less? B. What is the probability of selecting a
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Flag a researcher takes a sample from a population and computes a statistic for the sample, which of the following statements is correct? Please explain a. sample stat. overestimates the corresponding population parameter, then stat. is biased b. sample stat. underestimates the corresponding population parameter, then stat. is biased c. sample
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For the following questions, determine whether to use a parametric or non- parametric test (look at assumptions or test for normality). Perform the hypothesis testing in R and write down the results and the R commands you used. Draw the distribution with the critical values. Where needed perform tests at =0.05. Make conclusions using both the

Assistance please. Refer to the accompanying data display that results from a sample of airport data speeds in Mops. Complete parts (a) through (c) below. TInterval Click the icon to view a t distribution table. (13.046,22.15) x = 17.598 SX = 16.01712719 n = 50 a. What is the number of degrees of freedom that should be used for finding the
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Let Xand Yhave joint density function (,)={23(+2)0for 01,01,otherwise. f ( x , y ) = { 2 3 (x+2y)for0x1,0y1, 0otherwise.Find the probability that (a) >1/4 X > 1 / 4 :probability = 0.8125(b) (1 point) Let X and Y have joint density function f (x, y) = 3 (x + 2y) for 0 1/4: probability = 0.8125 (b) X
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U may have to use stat crunch D Question 3 5 pts A pollution index was calculated for a sample of cities in the eastern states using data on air and water pollution. Assume the distribution of pollution indices is unimodal and symmetric. The mean of the distribution was 35.9 points with a standard deviation of 11.6 points. What is the z score of a
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please answer To construct a condence interval for the difference between two population means 01 - p2, use the formula shown below when both population standard deviations are known, and either both populations are normally distributed or both n1 2 30 and n2 2 30. Also, the samples must be randomly selected and independent. i1 = $107,030, n1 =
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plsss helpp me the due date is tomorrow thanksss Fill in the blanks: is a quantity that may assume any one of a set of values, is the set of all possible outcomes of an experiment. is a variable whose values are determined by chance. a type of error committed when Ho is rejected even if it is proven true. is an element of a set where each element
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Abby met with a psychologist and took the California Psychological Inventory (CPI). The psychologist is particularly interested in her score on the Self-Control scale (see description below). Abby's raw score on the Self-Control scale was 12. For the population, scores are normally distributed with = 22 and = 4. Answer the following questions

please help me with this. thank you! B.) standard deviation 5.) The area to the left of z - 2.32 is A.) 0.4898 B.) 0.4960 C.) 0.5645 D.) 0.9898 6.) The area to the right of z = -1.8 is A.) 0.0136 B.) 0.6720 C.) 0.4665 D.) 0.9641 7.) The area to the left of z = - 1.5 is A.) 0.0643 B.) 0.4357 8.) A Science test has a mean 75 and standard deviation
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1.What is the estimated value of Z = 3.99? 2.Suppose MNAT scores follow a normal distribution. The Math scores have a mean of 500 with a standard deviation 120, and the English scores have an average of 520 with a standard deviation of 100. If you scored 610 in Math and 620 English, which score is more impressive compared to the population? 3.A

A biased sample is one that C) will likely have certain groups from the population overrepresented or underrepresented due only to chance factors. (it will always lead to a wrong conclusion. C) will likely have groups from the population over-represented or under-represented due to systematic sampling factors. C) is too small. O is always a good
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One of the major measures of the quality of service provided by any organization is to speed with which it responds to customer complaints. A large family held department store selling furniture and flooring including carpeting had undergone a major expansionin the past several years. In particular, the flooring department had expanded from 2

Please show work 0 / 1 pts In a simple regression analysis, we determine that the Total Sum of Squares is 154 with degrees of freedom of 32. We also determine the Residual Sum of Squares is 139 with a degrees of freedom of 31. What is the F statistic for this analysis? 1.11 3.12 3.35 0.93 Question 8 0 / 1 pts In a simple regression analysis, the
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Chi-square has two uses - the goodness of fit test, and the test of independence. The latter provides insight to the relationship between categorical variables. Unlike Pearson's r, and other measures of correlation, chi-square does not require the variables to be continuous. After all, just because two variables are categorical does not mean they

Determine whether the following is an example of a sampling error or a non sampling error. 12% of all people are left handed. A researcher randomly selected 200 people and found that 16% of them were left handed. No mistakes were made in the data collection or data recording. The 4% difference is due to ... O Non Sampling Error O Sampling Error
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5. A hotel wants to know if there's a relationship between gender and the way customers make room reservations. A manager takes a random sample of 160 reservations. She records whether they were made by a man or a woman, and also records how the reservation was made. She gets the following data: Perform a chi-square significance test of
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Lesson 12.1: Does seat location matter? rating Chart Do students who sit in the front rows do better than students who sit farther away? Mr. Morse took a random sample of 30 students from his classes and found these results. Row 1 1 1 1 1 1 2 2 2 2 2 2 3 3 3 3 3 3 Score 76 77 94 99 88 90 83 85 74 79 77 79 90 88 68 78 83 79 Row 4 4 4 4 4 4 5 5 5 5
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A population of X follows a normal distribution with mean ,u and variance 1- Let Y be another normal population with mean 2;: and variance 1. A sample of size 36 is taken from both populations. 3) Name the distribution and parameters of: i) S = )7. (2 marks) 5 ii) 0 = 201- an)? f:1 (2 marks) iii) W = 277. (3 marks) iv) V = 18( W + u). (3 marks) b)
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Justin is a grade 12 student planning to go to university next year. He has studied hard and is proud of his overall average of 82%. However, Justin is uncertain of where he stands in relation to other classmates applying to university. By using his understanding of statistics, Justin hopes to determine his chances of being accepted into the

A factory that manufactures bolts is performing a quality control experiment. Each object should have a length of no more than 10 centimeters. The factory believes that the length of the bolts exceeds this value and measures the length of 84 bolts. The sample mean bolt length was 10.03 centimeters. The population standard deviation is known to be

Question is attached as an image from the textbook. Let Z be the standard normal random variable. (a) Find the value of the probability density function fr(x) of X = [Z + 1 for x = 1. (b) Find the value of the probability density function fy() of Y = e- fory = 2. (c) Find E[Y ] (Hint: this problem is closely related to the moment generating
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Identify if it is ONE-tailed test or TWO-tailed test >A certain part of a plane has to be manufactured to 0.02 mm accuracy, and quality assurance team tests 10 of the parts to check that they are manufactured correctly. >A researcher finds that the average lifespan in a country is 78 years old, and wants to test whether people on an island in the

The probability that a person in the United States has type B+ blood is 7%. Five unrelated people in the United States are selected at random. Complete parts (a) throng) {d}. The probability that none ofthe live have type 13+ blood is {Round to three decimal places as needed.) (c) Find the probability that at least one of the five has type B+
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Help. Answer the question using the image. Average Nearest Neighbor Summary Nearest Neighbor Ratio: 0.517495 z-seore: -9.812319 - p-value: 0.000000 Given the z-soore of 3.812319, there is a less than 1% likelihood that this clustered pattern could be the result of random chance. Average Nearest Neighbor Summary Observed Mean Distance: I 9716.5052
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What is the number of ways to get two pairs in a poker hand (5 cards)? What is theprobability of such a hand? Show your work and explain how you got your answer.

Please help and explain these two probability questions. (Problem 10) Should you drop your decision-analysis course? Suppose you faced the following problem: If you drop the course, the anticipated salary in your best job offer will depend on your current GPA: Anticipated Salary | Drop = ($4000 x Current GPA) + $16,000. If you take the course, the
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The data show the years in which climbers on an expedition were born. Reached the Summit: 1973, 1980, 1953, 1960, 1965, 1946, 1967, 1971, 1961, 1950 Did Not Reach the Summit: 1970, 1992, 1984, 1945, 1968, 1982, 1989, 1985, 1970, 1956, 1964, 1992, 1939, 1973, 1984, 1983, 1991, 1993 (a) Create an double stem-and-leaf plot that compares the birth

The heights of adult men in America are normally distributed, with a mean of 69.3 inches and a standard deviation of 2.65 inches. The heights of adult women in America are also normally distributed, but with a mean of 64.3 inches and a standard deviation of 2.58 inches. a) If a man is 6 feet 3 inches tall, what is his z-score (to two decimal

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